segment-anything/demo/src/components/helpers/scaleHelper.tsx

// Copyright (c) Meta Platforms, Inc. and affiliates.
// All rights reserved.

// This source code is licensed under the license found in the
// LICENSE file in the root directory of this source tree.


// Helper function for handling image scaling needed for SAM
const handleImageScale = (image: HTMLImageElement) => {
  // Input images to SAM must be resized so the longest side is 1024
  const LONG_SIDE_LENGTH = 1024;
  let w = image.naturalWidth;
  let h = image.naturalHeight;
  const samScale = LONG_SIDE_LENGTH / Math.max(h, w);
  return { height: h, width: w, samScale };
};

export { handleImageScale };